Skip to content

UUID Generator

Generate, validate, and inspect universally unique identifiers

Time-based

UUID V1

0f15cd60-8b8e-11f1-8f59-533753f34af2
Random

UUID V4

d590e6db-17e4-4598-a931-b51f8f7af565
Name-based

UUID V5

86ca9510-687a-5cac-96d3-0ed737ad3b40

Batch Generator

Version

UUID Validator

Paste a UUID to check if it's valid and identify its version.

UUID Versions Explained

Version 1

Uses the current timestamp and MAC address. Guarantees uniqueness but may expose hardware identity.

Version 4

Purely random. The most commonly used version — simple, private, and virtually zero collision probability.

Version 5

Derived from a namespace + name using SHA-1. Deterministic: the same inputs always produce the same UUID.